87200945078917 has 8 divisors (see below), whose sum is σ = 87221471778936. Its totient is φ = 87180419831232.

The previous prime is 87200945078909. The next prime is 87200945078921. The reversal of 87200945078917 is 71987054900278.

It can be written as a sum of positive squares in 4 ways, for example, as 12534651665761 + 74666293413156 = 3540431^2 + 8640966^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87200945078917 - 2³ = 87200945078909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87200945078987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124779723 + ... + 125476615.

It is an arithmetic number, because the mean of its divisors is an integer number (10902683972367).

Almost surely, 2^{87200945078917} is an apocalyptic number.

It is an amenable number.

87200945078917 is a deficient number, since it is larger than the sum of its proper divisors (20526700019).

87200945078917 is a wasteful number, since it uses less digits than its factorization.

87200945078917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726167.

The product of its (nonzero) digits is 71124480, while the sum is 67.

The spelling of 87200945078917 in words is "eighty-seven trillion, two hundred billion, nine hundred forty-five million, seventy-eight thousand, nine hundred seventeen".